Self-heating sadiron



1929. a. A. LAKE 1,708,312

' SELF HEATING sADInoN Filed June 4, 1926 2 Sheets-Sheet. l

B. 'A. LAKE SELF HEATING SADIRON April 192,9.Y

` Filed June 4, 1926 2 sheets-sneer 2 Patented Apr. 9, 1929.

UNITED STATES BERTUS A. LAKE, OF EEC-r PR-AREE, GEIQ.

SELF-HEATING SADIRN.

Application filed June 4, 192. Seri-a1 No, 113 303.

combustion chamber and flucs therefor; and

the objects of the invention are to provide for self-heating sad irons improved combustion chambers and lues therefor, which are simple and inexpensive to manufactureand durable and efficient m use, and including improved means for delivering air to the combustion chamber, for creating a more eticient combustion of the fuel at the burner, for transmit-ting the heat ofthe burning flame to the sad-iron base and the ironing surface thereof, and for rapidly and thoroughly eliminating the products of combustion from the conilimstion chamber.

'lhese objects are attained by the preferred struct-ion and arrangement hereinafter described and illustrated in the accompanying dr wings forming part hereof, in which- 1 ire 1 is a side elevation of a sad-iron en'lbodying the present improvements;

Fig. 2, a fragmentary vertical axial cross sect-ion thereof; and

F ig. 3, a fragmentary transverse cross-section thereof, as onlines 3-3, Figs. 1 and 2.

Similar numeralsrefcr to similar'parts throughout the drawings.

A preferred form of the improved selfheating sad iron is indicated generally at 1, and includes a base 2 having the usual bottom ironing surface a middle section 4L- and a double cover 5, removably associated with each other as by means of pins G. T hreaded lower ends l of reduced diameters, are provided on the pins 6, and pass through apertures 3 in a preferably horizontal web 9 extending inwardly substantially midway intermediate the upper and lower edges of the p middle section el, and are screwed into threaded apertures 10 in upwardly extending medial lugs 11 of the iron base 2. The body section of the pins G thus form bolt heads for securely clamping the iron middle section to the iron base section. The pins 5 are located one on each side of the longitudinal axis of the iron and extend upwardly through apertures 12 in the double cover 5, and are provided at their upper ends with annular grooves 13 for selective cooperation with cam edges 14 of a locking lever 15 pivot-ally secured to the double cover as at 16.

The double cover 5 includes a bottom plate 17 and a top plate 18 secured to each other as by s 'rews 1f) and being' uroi/'ided with a heat resisting sheet 20, pref rably of asbestos, between theI plates for rotar-ling the passage of heat from the bottom plate to the top ilate. The bottom plate may be provideduwlth a plurality of ontw 'dly directed grooves 2l couinninicating willi apertures 22 in the Y)hito for carrying hot gases through the bottoni plate and deflecting the .same b` means of the V es sheet outwardly from the iron through the grooves 21.

Screws 19 may likewise secure to the plate 18 the handle 23'for the iron.

T he iron base forms the bottom wall, middle top the section forms the side walls, and the he top wall ofthe improved coml ci unbe .indicated ally at hich is located the burner 25 of a usual ll known construction, the burner betached to the generator 26 which is connected by means of the feed pipe 27 to lthe fuel tank 28.

The base 2 of the iron is provided with an upper surface 29 preferably parallel with the lower ironing surface 3, and, with upwardly extending end lugs 30 and 31 whose upper surfaces 30 and 31 are above the level of the surface 29, and upon which upwardly eX- tending lugs middle section l is supported so that its lower edge 32 is elevated above the surface to form preferably horizontal air inlet slots 33 on each side of the iron.

The base 2 is also provided with a bafle wall 34 extending upward from the surface 29 substantia ly midway between the outer ed of the base and the longitudinal axis of the iron and forming a centrally located coming at bustion bowl 35, tic upper edge 3G of the baille wall being preferably located a substantial distance above the lower edge 32 of the middle section and may be midway between the edge 32 and the lower surface of the web 9.

A longitudinal central aperture 37 preferably somewhat less in area than the bowl 35, is provided for the web 9, the web being located intermediate the lower edge 32 of the middle section and the upper edge 3S, thereby forming a. lower combustion compartment 24a communicating with an upper exhaust compartment 24h for the combustion chamber.

The cover 5 is supported slightly above the upper edge 38 of the middle section and the edge 33 is preferably provided with a plurality of spaced notches 39 for providing exit the fuel.

flues for the products of combustion in the combustion chamber. l

rlhe burner ispreferably provided with downwardly directed apertures 25 and 25V for admitting fuel such as gasoline vapor to the combustion chamber.

ln use the burner is lighted in the usual manner and the downwardly.directed flame F heats the bowl and the interior of the combustion chamber, thereby drawing air A into the chamber through the slots 33. rihe outer surface of the vertically extending baffle wall 3a directs the incoming air upward against the lower surface of the web 9, which in turn deflects the air downward into the combustion bowl for providing sutheicnt air for the purpose of completely burning The wall 34 also acts as a heat eollector for the base 2 since the burning fuel is directed not only against the upper surface 29 of the bowl, but also against the inner surfaces of the wall 34:.

The products of combustion pass upward through the aperture 37 and out through the notches 39 in the upper edge of the middle section. Portions of the products of combustion may also pass up through the apertures 22 in the plate 17 and out through the grooves 2l. i

By means of the foregoing construction and arrangement a highly efiicient combustion-of the fuel in the combustion chamber is attained, and a satisfactoryquantity of the heat thus generated is transferred through the walll 34 and the upper surface 29 to the base 2 and its ironing. surface 3.

The provision of the-notches 39 in-the upper edge of the middle section enables not only an efhcient, but also a rapid combustion of fuel, since the flue dra-ft area thus provided is adequate for drawing sufficient quantities of the air through the combustion chambers for carrying on rapid combustion.

Moreover the provision of the Hue notches protects the cover froma considerable quantity of heated gases which would otherwise pass up through the apertures 22 and out the notches 2l, thereby maintaining the handle 23 at a comfortable temperature for convenient operation.

I claim: l

A self heating sad iron including a base forming the bottom wall, a middle section forming theside walls, and a cover forming the top wall of an internal combustion chamber for the iron, side walls extending upwardly from the base and spaced substantially midway between the outer edges of the base and the longitudinal axis of the iron and extending upwardly al substantial distance above the lower edge of the middle section and forming a combustion bowl and air baille in the combustion chamber, a deiiector web extending horizontally inwardly from the middle section walls substantially midway intermediate the upper and lower edges thereof and dividing thecombustion chamber into a combustion Vcompartment and an exhaust compartment, and there being an air inletbetween the base and the middle section for admitting air to the combustion chamber, and there being an exhaust outlet for the combustion chamber.

In testimony that I claim the above, I have hereunto subscribed my name.

- Y BERTUS A. LAKE. 

